Oven door, frame, and fastening device



sept. 2o, 1932.

llci.

H: E. DUNKLE E'ru..l

OVEN DOOR, FRAME, AND FASETENING DEVICE 2 Sheets-Sheet 1 aFiled Dec. 15, 1,926

JIM/05850 5R Trop/JEVS i Sept. 20, 1932. H. E. DUNKLE E'r AL QVEN DOOR, `FRAME, AND F'ASTENING DEVICE 1926 2 SheetS-Sheet 2 Filed Dec 15 V 50 fg 21 Patented Sept. 20, 1932 PAT EN OFFE.,

HERBERT EDWARD DUNKLE, 0F JACKSON HEIGHTS, AND JULIUS BECKER, OF FLUSH- ING, NEW YORK, ASSIGNORS, BY MESNE ASSIGNMENTS, T O SEMET-SOLVAY ENGI- NEERING- CORPORATION, OF NEW YORK, N. Y., A CORPORATION OE' NEW YORK OVEN DOOR, FRAME, AND FASTENING DEVICE Application filed December 15, 1326;. Serial No.A 154,875.

The present invention relates to byfproduct coke ovens and more particularly to that part of such coke ovens which is concerned with the means for closing the ends of the coking chambers.

In the construction and operation of byproduct coke ovens, particularly of the horizontal flue type, it is well known that the matter of a satisfactory oven closure has presented a diicult problem. A proper solution of this problem required the elimination of leakage of coke oven gas from the coking chamber and of flue gas from the heating flues, the prevention of the destruction of the door frame itself due to breakage, and the provision of as great a coking space as possible in the coking ovens.

Heretofore, various structures have been proposed in the effort to partially solve'the aforesaid problem but all of these proposals have been unsatisfactory because of one reason or another. It is an object of the present invention to provide an improved oven closure including a novel door frame and novel fastening means therefor which will reliably prevent gas leakage adjacent the said structure either from the heating flue system or the coking chamber, which Vwill reduce or substantially eliminate the breakage of the. door frames themselves, and which will pro-vide a maximum coking space in the coking chambers. vide such a structure which is simple in construction, has a lowinitial cost, and a relatively negligible upkeep.

Other features and advantages of the invention will be made clear by a description of a preferred embodiment thereof as illustrated in the accompanying drawings, in which Fig. 1 is an elevation of a portion of a byproduct coke oven illustrating an oven frame and door structure constructed according to our invention:

Figs. 2 and 3 are sectional views on the lines 2 2 and 8-3 respectively of Fig. 1;

Figure 4 is an enlarged sectional view on the line 4--4 of Fig. 1,

Fig. 5 illustrates a detail view on an enlarge-d scale of aV fastening bracket and A further object is to prothrust bar shown in Fig. 1 for holding our improvedroven frame in position;

Fig. 6 is a sectional view'on the line 6-6 of 5; and A y l Y Fig. 7 is a perspective view of a wedge used to maintain the frame in position.

In the drawings the numeral 1 (see Fig. 3) designates a part of avcoking oven of a battery of such ovens positioned between adjacent division walls 6 of massive construction. Each oven 1 has a horizontal heating flue system 2 of well known type at each side thereof adjacent to the division walls 6 but of lesser longitudinal extent and theyV dene between their respective side walls 4 the extentv of available coking space in the chambers l. The outerA and inner walls 3 and 4 of this flue system fit against and preferably make a strong joint with end members or bricks 5 which are facedV with jamb bricks 7. Atv appropriate positions a plural- A ity of burners 8 (see Fig. 1)V protrude through these bricks 7 and 5 into the heating flues at each end of the oven. Air to support the combustion of the fuel gas issuing from these burners flows from well known regenerators or the like (not shown) located underneath the coking ovens. The heat from the burning gas distills or-evolves the volatile products, so-called coke oven gases, from the coal or the charge in the coking chambers 1. The coke oven gases, as is well known, leave the oven through the usual off-take ports (not shown) located in the upper part of each oven. The-products of combustion from the heating flues flow to a chimney or stack via appropriate outlets and regenerators (not shown).

Our improved ovenV frame designated gen- 1 erally by 11A (see Fig. 1) frames the entire periphery of the outer face of the end walls of the coking chambers 1 but leaves the entrance -to or the exit from said chambers Y unobstructed. This frame is seated on brickwork 17 below the oven floor 18 (see Fig. 2) and is preferably made as an integral metal casting having a substantially trapezoidal cross-section (see Fig. 3) with inner sloping sides, with a retaining rib or inner iiange16 Y projecting 'from the corner Vof said section and engaging jamb bricks 7, and with an outer flange, said inner and outer flanges and inward continuations of said inner flanges constituting a door abutment. )Vithin the frame 11, webs 13 are positioned at Vspaced points to reinforce the casting. By

seating the rib 16 in a corresponding recess in the jamb bricks 7, the flue system is lined up properly and leakage ofy gas from the cokingchamber between the jamb bricks and the rear of the frame is minimized.

A plurality of spaced brackets 19 are secured at appropriate distancesfrom each.

ybrackets 19 is located suiiiciently close to the outer face of the framework 12 to allow a wedge 15 (Figs. 3 and 7) to be driven in be! tweenand to be frictionally maintained in position while preserving the Wedgmg strain.

The wedges are furthermore operative upon the thrustbars and the oven frame in such Vmanner as to exercise a retaining force which which is to allow for an adjustment of position as between their seats 50 andthe outer face of the framework 12. Thus if due to expansion of the iue system, the. seat 50 ofthe thrust bar 21 is found to be too close to the face of framework 12, the thrust bars can be re-seated in their retaining recesses l in a reversed position with the arms 21 pointing away from the 'coking chamber instead of pointing towardV the chamber as shown in Fig. 3, and in' that positionv there Will then be suliicient room for the wedge. InA

case it is desired to provide a thrust bar with more than two positions `for adjustment, the straight sides of the bars can be modified to provide another adjustable position. .Fur-

l thermore, by bending athrust bar in a plane perpendicular to that illustrated in Fig. 6, four different positions for adjustment will be available.

Between the inner sidewalls of the frame 11 and the j amb bricks 7 asteel plate 22 (Fig.

j 3), smooth on'its outside face andl preferably also on its inner face, may be interposed for the purpose of maintaining as snug a fit as possible between the frame 1l andV bricks 7,

fwhen under pressure of wedges 15. In thisVV way gas leakage between the frame and the bricks 7 is further prevented. The steel contacting plate 22 not only reinforces the cast frame 11 but also offers a sliding surface for the jamb bricks during expansion and contraction. At the top of the oven, steel plates like 22 are not required but the casting 11 at this point may be thickened (see F'g. 2) so that the rear Vof the frame inelusive of plates 22 presents a flat seating 'surface throughout without requiring special construction of the brickwork to seal the frameagainst the brick facing.

A door 23 is seated in the cast frame 11 and is preferably made with a metallic element having edge surfaces substantially perpendicular to the plane of the door, such as a casing of cast iron, provided with a steel contacting plate 24 at` each side thereof, said plates 24 being riveted or otherwise fastened to the edge surfaces ofthe said casing and projecting from the element, so that the edge of each plate'projects rearwardly from the door toward the door frame. When the door is in position, each edge contacts with the adjacent face of the frame. The inner wall of the door is lined with refractory bricks 25 in any approved manner. In order to re- .jtain the door in a closed position locking ibars 26 (F igsl and 2) and latches 27 of well 'known type are used, projecting rail members 29 serving as a guide for the bars 26 being carried by the door casting. An opening 28 in the door casting (Figs. l and 2) is provided for a door extractor so that the door may be removed in a mechanical manner. It will be observedthat when the door is set in place against the frame, the line of contact will be the one defined by the inner fiat faces of the steel plates 24, which are part of the door structure, against a flat part of the door frame at the point where the latter is reinforced by rib 16 (see Fig. 3). In this respect the present construction di'ers from the standard practice of endeavoring to make a line contact between a sloping side face of the door and an angular part of the frame or vice versa. The advantage of the new struc- Jture is to provide a flat surface contact throughout, the surfaces Vbeing in contact at substantially right angles to the direction of the forces whichhold thel door against the frame, and thus to provide a continuously tight seat irrespective of irregularities in the contour of the door or of the frame such as Amight result from uneven heat distribution sulting uneven expansion of the oven structure, which provides a support to keep the iiues in position and to decrease gas leakage between the oven door frame and the oven jambs, which utilizes a thrust bar of cantilever type and an associated wedge to ac-- ed as a separate unit from its seat.

Furthermore, our improved oven frame and door provides an oven chamber with approximately maXimum coking space for a given structure. Since the oven frame is supported from the buck-stays (which project outwardly from the division walls) it can be positioned close to the outer end of the di- .vision walls with an ample allowance for the jamb bricks and the door linings so that `the inner faces of the two-doors enclosing` the two ends of the oven chamber are located at substantially a maximum distance apart, thus providing substantially the maximum `coking space permissible by the oven structure.

We claim:

' l. In a coke oven battery comprising open ended coking chambers alternating side by side with division walls having heating flue systems adjacent to the sides thereof vand buck-s-tays adjacentto `the ends of said division walls, a closure structure for a coking chamber comprising a metal frame surrounding an end opening of the coking chamber, and means supported from the buck-stays for holding the frame in place by a pressure contact at a plurality of points between said means and said frame.

2. In a coke oven battery comprising horizontal coking chambers alternating side by side with division Vwalls having heating flue systems adjacent to the sides thereof and buck-stays adjacent to the ends of said division walls, a closure structure for a coking chamber comprising a metal frame surrounding an end opening of the coking chamber, and means supported from the buckstays for holding the frame in place by a pressure contact at a plurality of points between said means and said frame, the pressure contact points being located in approximately the longitudinal central region of the side walls of said frame as well as of the end walls of the flue systems,

3. In a coke oven battery comprising hori- Zontal `coking chambers alternating side by side with division walls having heating flue systems adjacent to the sides thereof and buck-stays adjacent to the ends of said division walls, a closure structure for a coking chamber comprising a metal frame surrounding an end opening of the coking chamber, means supoprted from the buck-stays for holding the frame in place by a wedgecontrolled pressure contact at a plurality of points between said means and said frame, the pressure contact points being located in approximately the longitudinal central region of the side walls of said frame.

4. A structure such as set forth in claim l, in which the lateral ends of the flue systems are provided with jamb bricks and in which a steel plate having sliding engagement with the faces of the jamb bricksis interposed between the inner surfaces of the side walls of the door frame and said jamb bricks.

5. A structure such as set forth in claim l, in which one edge of the frame is developed as a rib while the lateral end bricks for the flue systems are provided with seats for such ribs, said seats and ribs being located near that edge of the frame which is nearest the center line of the coking chamber.

6. A structure such as set forth in claim l, in which the lateral ends of the iiue systems are provided with amb bricks and in which a steel plate having sliding engagement with the faces of the jamb bricks is interposed between the inner surfaces of the side walls of the door frame and said jamb bricks, each inner lateral edge of the door frame being developed as a rib while the jamb bricks are provided with seats for such ribs, said seats and ribs being located near that edge of the frame which is nearest the center line of the coking chamber.

7. In a coke ovenbattery comprising horizontal coking chambers alternating side by side with divisionV walls lhaving heating flue i" systems adjacent to the sides thereof and buck-stays adjacent to the ends of said division walls, an opening in each end of each coking chamberyend bricks for the iiue systems, a metal door frame surrounding each `of the end openings and seated snugly against the end bricks of the iiue systems, means supported from the buck-stays for holding the frame in place by a pressure contact at a plurality of points between said means and said frame, the pressure contact points being located in approximately the longitudinal central region of the side walls of said frame, a door seated snugly against said frame.

8. In a coke oven battery comprising hori- Zontal coking chambers alternating side by side with division walls having heating flue systems adjacent to the sides'thereof land buck-stays adjacent to the ends of saiddivisionwalls, Aa closure structure for a coking chamber comprising lateral end bricks for the flue systems, a metal frame surrounding an end opening of the coking chamber and seated snugly against the end bricks of the flue systems, means supported from the buckstays for holding the frame in place by a pressure contact at a plurality of points between said means and said frame, the pressure contact points being located in approximately the longitudinal central region of the side walls of said frame, and a door fitting in said frame to close the end of the coking chamber constituted of a metallic casing and refractory material carried by said casing, said door having a metallic bar secured to each side thereof in such aV manner that the bar contacts snugly'against the face of the frame, forms a recess between the door and itself, and provides a clearance between the door and a retaining strip on the frame as Well as between itself and the frame near the seat.

9. A frame and door for a coking chamber of a by-product coke oven battery, which comprises an integral cast metallic frame Vhaving longitudinal seating faces on the sides thereof, a cast metallic door casing fitting Within but spaced from said metallic frame, having its inner face lined with refractory material and having steel plates secured tor the sides, said steel plates having flat longitudinal edge faces, one of the flat longitudinal edge faces of said plates extending beyond the door casing and being adapted to make edge contact with the longitudinal seating faces on the sides of said frame so as to provide a substantially gas-tight joint.

10. A frame and door for a by-product coke oven having heating flue systems adj acent each coking chamber, which comprises jamb bricks at the lateral ends of the heating flue systems, a cast metallic frame for said oven, the longitudinal vsi-des of which have a substantially trapezoidal shaped cross-section With'reinforcing webs located at spaced points and with a retaining rib eX- tending along the inner edge of said frame,

' said rib engaging the jamb bricks thereby CTI keeping the iue system lined up, and a metallic door element fitting said frame and lined with refractory material and having a metallic part thereof engage the outer face of said retaining rib so as to provide a substantially gas-tight joint. Y l

1l. In a coke oven battery comprising horizontal coking chambers alternating side by side with division walls having heating flue systems adjacent to the sides thereof and buck-stays adjacent to the ends of said division walls, the combination of jamb bricks at the lateral ends of the flue systems, a metallic door frame having a flat face seated against the j amb bricks7 a plurality of spaced vthrust bars rigidly supported from said buck-stays and Wedges engaging the outer surface of said frame and the inner faces of the thrust bars to hold the frame in position, an oven door fitting said frame and means for making a flat metallic joint between the door and its frame.

12. In a coke oven battery comprising horizontal coking chambers alternating sideby side with division walls having heating iue systems adjacent to the sides 4thereof and buck-stays adjacent to the ends of said divisionV walls, the combination of jamb bricks at the lateral ends of the heating flue systems, a cast integral metallic door frame for each of saidovens, the said framehaving a flatsurfaced seating portion'for a door and a flat inner face and a retaining rib at the inner edge thereof adapted to engage said jamb bricks, a flat steel plate interposed between said flat innervface of the frame and the said jamb bricks, a plurality of cantilever thrust bars, brackets secured to said buck-stays at spaced points for rigidly supporting the thrust bars, wedges to cause strain as between the thrust bars and the frame, the said thrust bars being shaped to engage said wedges and therebyhold said door frame tightly in position against said steel plates and said amb bricks, and an oven door having a fiat metallic surface engaging the corresponding flat surface on said door frame.

13. A coke oven door assembly comprising in combination a metallic frame having sides, inclined with respect to` a vertical plane at right angles to the coke oven flanges eX- tending from said sides in both horizontal directions toward the coke oven chamber and away from the chamber, and inner continuations of the inner flanges extending toward the chamber constituting a door abutment, a door including a metallic casing with edge-surfaces substantially perpendicular to the plane of the door and metal strips riveted to the edge surfaces and projecting from the A casing, said strips having edge contact with the abutment, latches extending from the outer flanges, and locking bars engaging said latches and said door..

In testimony whereof we have hereunto set our hands.

HERBERT EDWARD DUNKLE. c JULIUS BECKER.

CERTIFICATE OF CORRECTION.

Patent No. 1,878,680. September 20, 1932.

HERBERT EDWARD DUNKLE ET AL.

1t is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 4, line 100, claim 13, after the word "oven" insert a comma; and lines 103 and 104, same claim, strike out the word "inner"; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 29th day of November, A. D. 1932.

M. J. Moore,

(Seal) Acting Commissioner of Patents. 

